Patents by Inventor Jin-hyung Lim
Jin-hyung Lim has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20190079136Abstract: Provided are apparatus and method of testing electrochemical performance of a battery cell in a nondestructive manner The apparatus according to an embodiment of the present disclosure includes: a memory configured to store first profile data, second profile data, a first positive electrode upper limit, a first positive electrode lower limit, a first negative electrode upper limit, and a first negative electrode lower limit that are determined in advance through a preliminary experiment with respect to each of a plurality of reference cells; a sensing unit configured to measure an open-circuit voltage of a test cell according to a variation in a state of charge (SOC) of the test cell; and a controller electrically connected to the memory and the sensing unit. The controller is configured to test performance of the test cell in a nondestructive manner based on data regarding the reference cells and data measured by the sensing unit stored in the memory.Type: ApplicationFiled: June 29, 2017Publication date: March 14, 2019Applicant: LG Chem, Ltd.Inventors: Jin-Hyung Lim, Du-Seong Yoon, Won-Tae Joe, Yong-Seok Choi
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Publication number: 20180351169Abstract: Provided are a method of preparing a cathode active material including coating a surface of a lithium transition metal oxide with a lithium boron oxide by dry mixing the lithium transition metal oxide and a boron-containing compound and performing a heat treatment, and a cathode active material prepared thereby. A method of preparing a cathode active material according to an embodiment of the present invention may easily transform lithium impurities present in a lithium transition metal oxide into a structurally stable lithium boron oxide by performing a heat treatment near the melting point of a boron-containing compound. Also, a coating layer may be formed in which the lithium boron oxide is uniformly coated in an amount proportional to the used amount of the boron-containing compound even at a low heat treatment temperature.Type: ApplicationFiled: August 8, 2018Publication date: December 6, 2018Applicant: LG Chem, Ltd.Inventors: Hyun Jin Oh, Ho Suk Shin, Jin Hyung Lim, Dong Hun Lee, Joo Hong Jin, Wang Mo Jung
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Patent number: 10056605Abstract: Provided are a method of preparing a cathode active material including coating a surface of a lithium transition metal oxide with a lithium boron oxide by dry mixing the lithium transition metal oxide and a boron-containing compound and performing a heat treatment, and a cathode active material prepared thereby. A method of preparing a cathode active material according to an embodiment of the present invention may easily transform lithium impurities present in a lithium transition metal oxide into a structurally stable lithium boron oxide by performing a heat treatment near the melting point of a boron-containing compound. Also, a coating layer may be formed in which the lithium boron oxide is uniformly coated in an amount proportional to the used amount of the boron-containing compound even at a low heat treatment temperature.Type: GrantFiled: October 29, 2014Date of Patent: August 21, 2018Assignee: LG Chem, Ltd.Inventors: Hyun Jin Oh, Ho Suk Shin, Jin Hyung Lim, Dong Hun Lee, Joo Hong Jin, Wang Mo Jung
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Publication number: 20180074131Abstract: An apparatus and method for conducting a nail penetration test for a secondary battery are provided. The apparatus for conducting the nail penetration test includes: a stage on which the secondary battery, which is an object of the nail penetration test, is fixed; a nail penetration unit including a nail elevating/lowering means; a voltage measuring unit configured to repeatedly measure a short-circuit voltage of the secondary battery with a time interval during the nail penetration test; and a controller operably coupled to the voltage measuring unit. The controller periodically receives a short-circuit voltage from the voltage measuring unit, determines a short-circuit current allowing the received short-circuit voltage to be applied between outermost nodes of an equivalent circuit which models the secondary battery whenever the short-circuit voltage is received, and visually outputs a change in the determined value of the short-circuit current according to time through a display unit.Type: ApplicationFiled: September 8, 2016Publication date: March 15, 2018Applicant: LG CHEM, LTD.Inventors: Jin-Hyung LIM, Se-Wook SEO, Yo-Han KO, Yong-Seok CHOI
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Publication number: 20180069272Abstract: An apparatus and method for adjusting a charging condition of a secondary battery are provided.Type: ApplicationFiled: August 22, 2016Publication date: March 8, 2018Applicant: LG CHEM, LTD.Inventors: Se-Wook SEO, Sang-Il SON, Yo-Han KO, Jin-Hyung LIM, Yong-Seok CHOI
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Publication number: 20180059192Abstract: An apparatus for estimating a degree of aging of a secondary battery is configured to: determine a current and a temperature of the secondary battery; determine a state of charge from the current of the secondary battery; determine a degree of calendar aging by applying a cumulative degree-of-aging model to a degree-of-calendar-aging profile corresponding to the determined state of charge and the determined temperature while the secondary battery is in a calendar state; determine a degree of cycle aging by applying the cumulative degree-of-aging model to a degree-of-cycle-aging profile corresponding to the state of charge, the temperature, and the current of the secondary battery while the secondary battery is in a cycle state; and determine, as the degree of aging of the secondary battery, a weighted average value calculated for the determined degree of calendar aging and the determined degree of cycle aging based on calendar time and cycle time.Type: ApplicationFiled: August 22, 2016Publication date: March 1, 2018Applicant: LG CHEM, LTD.Inventors: Se-Wook SEO, Yo-Han KO, Jin-Hyung LIM, Yong-Seok CHOI
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Publication number: 20170365849Abstract: Disclosed is a cathode active material for secondary batteries comprising at least one compound selected from the following formula 1: (1-s-t)[Li(LiaMn(1-a-x-y)NixCoy)O2]*s[Li2CO3]*t[LiOH]??(1) wherein 0<a<0.2, 0<x<0.9, 0<y<0.5, a+x+y<1, 0<s<0.03, and 0<t<0.03; and a, x and y represent a molar ratio, and a and t represent a weight ratio. The cathode active material has long lifespan at room temperature and high temperatures and provides superior stability, although charge and discharge are repeated at a high current.Type: ApplicationFiled: August 30, 2017Publication date: December 21, 2017Applicant: LG Chem, Ltd.Inventors: Sung-Kyun Chang, Hong Kyu Park, Sin Young Park, Jin-hyung Lim, DongHun Lee
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Patent number: 9786911Abstract: Disclosed is a cathode active material for secondary batteries comprising at least one compound selected from the following formula 1: (1?s?t)[Li(LiaMn(1?a?x?y)NixCoy)O2]*s[Li2CO3]*t[LiOH]??(1) wherein 0<a<0.2, 0<x<0.9, 0<y<0.5, a+x+y<1, 0<s<0.03, and 0<t<0.03; and a, x and y represent a molar ratio, and a and t represent a weight ratio. The cathode active material has long lifespan at room temperature and high temperatures and provides superior stability, although charge and discharge are repeated at a high current.Type: GrantFiled: June 21, 2012Date of Patent: October 10, 2017Assignee: LG Chem, Ltd.Inventors: Sung-Kyun Chang, Hong Kyu Park, Sin Young Park, Jin-hyung Lim, DongHun Lee
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Patent number: 9779875Abstract: A multilayer ceramic electronic component includes a ceramic body including dielectric layers and first and second internal electrodes disposed to face each other with respective dielectric layers interposed therebetween, and external electrodes disposed on outer surfaces of the ceramic body. Opposite edge portions of at least one or more of the first and second internal electrodes in a width direction of the ceramic body are thicker than a central portion thereof, and a ratio (T2/T1) of a thickness (T2) of the edge portion to a thickness (T1) of the central portion satisfies 1.0<T2/T1?2.0.Type: GrantFiled: September 17, 2015Date of Patent: October 3, 2017Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jin Hyung Lim, Min Hee Hong, Chang Hoon Kim, Doo Young Kim, Chul Seung Lee
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Publication number: 20160293951Abstract: The present disclosure relates to a positive electrode active material which reduces lithium by-products and improves structural stability and includes a lithium-nickel based transition metal composite oxide in which an alkaline earth metal having oxidation number of +2 is doped and a phosphate coated layer formed on the outer surface of the composite oxide. Accordingly, a second battery including the positive electrode active material has excellent capacity characteristics, and also improves structural stability during charging/discharging and prevents swelling, thereby being capable of exhibiting excellent life characteristics. Therefore, the present invention may be easily applied to industry in need thereof, and particularly to electric vehicles industry requiring high capacity and long-term life characteristics.Type: ApplicationFiled: February 26, 2015Publication date: October 6, 2016Applicant: LG Chem, Ltd.Inventors: Jin Hyung Lim, Ho Suk Shin, Dong Hun Lee, Hyun Jin Oh, Joo Hong Jin, Wang Mo Jung
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Publication number: 20160196917Abstract: A multilayer ceramic electronic component includes a ceramic body including dielectric layers and first and second internal electrodes disposed to face each other with respective dielectric layers interposed therebetween, and external electrodes disposed on outer surfaces of the ceramic body. Opposite edge portions of at least one or more of the first and second internal electrodes in a width direction of the ceramic body are thicker than a central portion thereof, and a ratio (T2/T1) of a thickness (T2) of the edge portion to a thickness (T1) of the central portion satisfies 1.0<T2/T1?2.0.Type: ApplicationFiled: September 17, 2015Publication date: July 7, 2016Inventors: Jin Hyung LIM, Min Hee HONG, Chang Hoon KIM, Doo Young KIM, Chul Seung LEE
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Patent number: 9378891Abstract: Disclosed herein is a multilayer ceramic device including a device body having lateral surfaces and circumferential surfaces connecting the lateral surfaces, an internal electrode disposed in a length direction of the device body within the device body, an external electrode having a front portion covering the lateral surface and a band portion extending from the front portion to cover a portion of the circumferential surface, and a reinforcement pattern extending from the lateral surface toward the interior of the device body and having a length longer than a width of the band portion.Type: GrantFiled: December 12, 2013Date of Patent: June 28, 2016Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Tae Jin Jang, Jin Hyung Lim, Hae Sock Chung, Doo Young Kim, Sang Hyun Park, Won Seh Lee
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Patent number: 9318264Abstract: Disclosed herein is a multilayer ceramic device, including a device body; an inner electrode arranged in the device body; and an external electrode arranged at outside of the device body and being electrically connected to the inner electrode; wherein the external electrode includes: an inner layer covering the device body; an outer layer covering the inner layer and being exposed to the outside; and an intermediate layer arranged between the inner layer and the outer layer, and made of a mixture of a copper metal and a resin, a surface of the copper metal being coated with an oxide film.Type: GrantFiled: February 25, 2014Date of Patent: April 19, 2016Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Hae Sock Chung, Doo Young Kim, Ki Won Kim, Tae Jin Jang, Hyun Hee Gu, Ji Hee Moon, Jin Hyung Lim, Youn Sik Jin, Byung Jun Jeon
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Patent number: 9287564Abstract: Provided are a positive electrode active material for improving an output and a lithium secondary battery including the same. Particularly, graphite and conductive carbon which have shapes and sizes different from each other, may be simultaneously coated on a mixed positive electrode material of a 3-component system lithium-containing metal oxide having a layered structure and expressed as following Chemical Formula 1 and LiFePO4 having an olivine structure as an conductive material to improve high resistance occurrence and conductivity reduction phenomenon of a 3-component system lithium metal oxide due to a difference between particle sizes and surface areas of the 3-component system lithium-containing metal oxide and LiFePO4 olivine. Li1+aNixCoyMn1-x-yO2, 0?a<0.5, 0<x<1, 0<y<0.Type: GrantFiled: August 3, 2012Date of Patent: March 15, 2016Assignee: LG CHEM, LTD.Inventors: Song Taek Oh, Sung Kyun Chang, Sin Young Park, Sun Jung Hwang, Jin Hyung Lim, Geun Chang Chung, Sin Kyu Kim, Jung Seok Choi, KeunWan An
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Publication number: 20160013476Abstract: Provided are a method of preparing a cathode active material including coating a surface of a lithium transition metal oxide with a lithium boron oxide by dry mixing the lithium transition metal oxide and a boron-containing compound and performing a heat treatment, and a cathode active material prepared thereby. A method of preparing a cathode active material according to an embodiment of the present invention may easily transform lithium impurities present in a lithium transition metal oxide into a structurally stable lithium boron oxide by performing a heat treatment near the melting point of a boron-containing compound. Also, a coating layer may be formed in which the lithium boron oxide is uniformly coated in an amount proportional to the used amount of the boron-containing compound even at a low heat treatment temperature.Type: ApplicationFiled: October 29, 2014Publication date: January 14, 2016Inventors: Hyun Jin Oh, Ho Suk Shin, Jin Hyung Lim, Dong Hun Lee, Joo Hong Jin, Wang Mo Jung
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Patent number: 9025307Abstract: There is provided a multilayer ceramic electronic component, including: a ceramic body including dielectric layers; and first and second inner electrodes disposed to face each other with the dielectric layer interposed therebetween within the ceramic body, the first and second inner electrodes being alternately laminated with a difference in printing widths therebetween, wherein a difference ratio between the printing widths of the first and second inner electrodes is 20 to 80%. According to embodiments of the present invention, a multilayer ceramic electronic component having excellent reliability and withstand voltage characteristics may be realized, by reducing the occurrence of cracking through a reduction in the influence of step height while securing high capacitance.Type: GrantFiled: August 2, 2012Date of Patent: May 5, 2015Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Jin Hyung Lim, Seok Kyoon Woo, Chung Eun Lee, Doo Young Kim
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Publication number: 20140240899Abstract: Disclosed herein is a multilayer ceramic device, including a device body; an inner electrode arranged in the device body; and an external electrode arranged at outside of the device body and being electrically connected to the inner electrode; wherein the external electrode includes: an inner layer covering the device body; an outer layer covering the inner layer and being exposed to the outside; and an intermediate layer arranged between the inner layer and the outer layer, and made of a mixture of a copper metal and a resin, a surface of the copper metal being coated with an oxide film.Type: ApplicationFiled: February 25, 2014Publication date: August 28, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Hae Sock CHUNG, Doo Young KIM, Ki Won KIM, Tae Jin JANG, Hyun Hee GU, Ji Hee MOON, Jin Hyung LIM, Youn Sik JIN, Byung Jun JEON
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Publication number: 20140160625Abstract: Disclosed herein is a multilayer ceramic device including a device body having lateral surfaces and circumferential surfaces connecting the lateral surfaces, an internal electrode disposed in a length direction of the device body within the device body, an external electrode having a front portion covering the lateral surface and a band portion extending from the front portion to cover a portion of the circumferential surface, and a reinforcement pattern extending from the lateral surface toward the interior of the device body and having a length longer than a width of the band portion.Type: ApplicationFiled: December 12, 2013Publication date: June 12, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Tae Jin JANG, Jin Hyung Lim, Hae Sock Chung, Doo Young Kim, Sang Hyun Park, Won Seh Lee
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Publication number: 20130221283Abstract: Provided are a positive electrode active material for improving an output and a lithium secondary battery including the same. Particularly, graphite and conductive carbon which have shapes and sizes different from each other, may be simultaneously coated on a mixed positive electrode material of a 3-component system lithium-containing metal oxide having a layered structure and expressed as following Chemical Formula 1 and LiFePO4 having an olivine structure as an conductive material to improve high resistance occurrence and conductivity reduction phenomenon of a 3-component system lithium metal oxide due to a difference between particle sizes and surface areas of the 3-component system lithium-containing metal oxide and LiFePO4 olivine. Li1+aNixCoyMn1-x-yO2, 0?a<0.5, 0<x<1, 0<y<0.Type: ApplicationFiled: August 3, 2012Publication date: August 29, 2013Applicant: LG CHEM. LTD.Inventors: Song Taek OH, Sung Kyun CHANG, Sin Young PARK, Sun Jung HWANG, Jin Hyung LIM, Geun Chang CHUNG, Sin Kyu KIM, Jung Seok CHOI, Keun Wan AN
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Publication number: 20130135787Abstract: There is provided a multilayer ceramic electronic component, including: a ceramic body including dielectric layers; and first and second inner electrodes disposed to face each other with the dielectric layer interposed therebetween within the ceramic body, the first and second inner electrodes being alternately laminated with a difference in printing widths therebetween, wherein a difference ratio between the printing widths of the first and second inner electrodes is 20 to 80%. According to embodiments of the present invention, a multilayer ceramic electronic component having excellent reliability and withstand voltage characteristics may be realized, by reducing the occurrence of cracking through a reduction in the influence of step height while securing high capacitance.Type: ApplicationFiled: August 2, 2012Publication date: May 30, 2013Inventors: Jin Hyung LIM, Seok Kyoon Woo, Chung Eun Lee, Doo Young Kim